> All the variant changes from Oulu should be covered by
> __has_include(<variant>); I don't think we have a need to track them
> separately unless someone chooses to produce a <variant> header that
> doesn't match the contents of any working draft.

I note that you don't mention the changes to "any" or "optional". Should I
infer that you think those changes deserve a macro, even though the
previous state appeared in only one WD?

Clark